• Tonight

    Feb 13

    Lo -7°

    Brisk and bitterly cold

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Sun

    Feb 14

    9°Lo -4°

    Mostly sunny and frigid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    Feb 15

    26°Lo 23°

    A little afternoon snow

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Tue

    Feb 16

    50°Lo 29°

    Milder with rain

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Wed

    Feb 17

    41°Lo 25°

    Mostly cloudy, snow showers

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
9pm
10pm 11pm Sun
12am
1am 2am 3am 4am
  9pm 10pm 11pm 12am 1am 2am 3am 4am
Forecast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) -1° -2° -3° -4° -5° -6° -6° -6°
RealFeel® -24° -27° -29° -31° -30° -29° -28° -25°
Humidity 47% 47% 48% 51% 54% 54% 55% 56%
   
  9pm 10pm 11pm 12am 1am 2am 3am 4am
Rain
 
0%
 
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0%
 
0%
 
0%
 
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0%
Snow
 
6%
 
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4%
 
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Ice
 
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  9pm 10pm 11pm 12am 1am 2am 3am 4am
Wind (mph) 16 NW 16 WNW 16 WNW 17 WNW 16 WNW 15 WNW 14 WNW 12 WNW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 46% 46% 46% 46% 46% 46% 46% 46%
Dew Point -16° -18° -19° -18° -18° -18° -18° -18°
Middle Grid line 0 F Middle Grid line -5 F

Temperature History - Feb 13

more Historical Weather Data >
  Today Normal Record 2/13/2015
High 21° 36° N/A 16°
Low -7° 18° N/A

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:46 AM with 10:28 of sunlight, then sets at 5:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:44 AM with 13:44 of moolight, then sets at 11:28 PM

Londonderry Weather Report

Boston: Flood threat to follow frigid Valentine's Day weekend

February 13, 2016; 5:20 PM ET

A sharp warmup and flood threat will follow the frigid Valentine’s Day weekend in Boston. more >

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps